If you wish to direct a domain address that you have to some other domain or subdomain, the best way to do that would be to use a CNAME record. By setting up such a record, the domain being forwarded loses all of its records (A, MX, and so forth) and instead, it takes the A record of the domain name it is directed to. This way, if you use a web design service by some provider that gives you a subdomain, you can use an actual domain and not only will it be pointed to the site which you have set up, but it'll also be displayed in the browser address bar at all times. Some other possible uses of a CNAME record are to point all the targeted traffic from various subdomains to their main Internet domain, or to use the webmail service of your webhosting company by using webmail.your-doman.com, for instance. The latter will work only by creating a CNAME record for a subdomain because such a record set up for the main domain makes it impossible to use e-mail addresses.